Reverse osmosis membrane device for treating fluorine-containing wastewater in electronic industry

Abstract

The utility model relates to a reverse osmosis membrane device for treating fluorine-containing wastewater in electronic industry, which comprises a shell, a sealing cover and a reverse osmosis membrane component, end covers are respectively arranged at the left end and the right end of a cavity of the shell, the reverse osmosis membrane component is arranged in the middle of the cavity, the shell is cylindrical, the end covers are in threaded connection with the shell, and a holding part is arranged on the outward surface of each end cover. An annular protrusion A is arranged at the outer end of the side wall of the end cover along the circumference, a rubber sealing ring A is arranged on the inward face of the annular protrusion A, an annular step corresponding to the rubber sealing ring A is arranged on the outward face of a port of the shell, the rubber sealing ring A abuts against the annular step, and rubber sealing rings B are arranged in the water inlet cavity and the water drainage cavity respectively. The rubber sealing ring B abuts against an annular gap between the outer edge of the inner end of the end cover and the inner wall of the cavity of the shell. The utility model has the advantages of simple and labor-saving assembly and disassembly, and good sealing performance.

Description

Technical Field

[0001] The utility model relates to the technical field of membrane filtering devices, in particular to a reverse osmosis membrane device for treating fluorine-containing wastewater in the electronics industry. Background Art

[0002] Some integrated circuit processing companies often produce wastewater containing more than 50 mg / L of fluoride during production. The inorganic fluoride in the wastewater is harmful to the human body. Long-term absorption will cause a variety of serious diseases. Therefore, it is necessary to treat the fluoride-containing wastewater accordingly. Reverse osmosis membrane device is one of the commonly used wastewater treatment devices.

[0003] Traditional reverse osmosis membrane devices generally use two methods to fix the connection between the end cap and the outer shell. One is to use a locking device with a complex structure, which is generally cumbersome to operate. The other is to use interference fit at the joint between the end cap and the outer shell. It takes a lot of force to install and remove the cover from the outer shell. In addition, there may be a gap between the end cap and the inner wall of the outer shell, which poses a risk of liquid leakage. Utility Model Content

[0004] The utility model aims to provide a reverse osmosis membrane device for treating fluorine-containing wastewater in the electronic industry, which has the advantages of simple and labor-saving assembly and disassembly and good sealing performance.

[0005] The technical solution of the utility model is as follows:

[0006] A reverse osmosis membrane device for treating fluorine-containing wastewater in the electronics industry comprises a shell, an end cover and a reverse osmosis membrane assembly, wherein the shell is cylindrical, the left and right ends of the cavity of the shell are respectively provided with end covers, and the middle part of the cavity is provided with a reverse osmosis membrane assembly, the left and right sides of the cavity of the shell are respectively used as a water inlet cavity and a drainage cavity, the end cover close to the water inlet cavity is provided with a water inlet, the water inlet is communicated with the water inlet cavity, the end cover close to the drainage cavity is provided with a water outlet and a sewage outlet, the sewage outlet is communicated with the drainage cavity, the reverse osmosis membrane assembly is provided with a water collecting pipe, the end of the water collecting pipe is connected to the inner end of the water outlet, and the shell is circular in shape. The end cap is cylindrical, and the left and right ends of the cavity of the end cap side wall and the shell are respectively provided with corresponding external threads and internal threads, and the threaded connection between the end cap and the shell is realized through the external threads and internal threads. The end cap is provided with a gripping portion facing outward, and the outer end of the end cap side wall is provided with an annular protrusion A along the circumference, and the inner surface of the annular protrusion A is provided with a rubber sealing ring A, and the outer side of the port of the shell is provided with an annular step corresponding to the rubber sealing ring A, and the rubber sealing ring A abuts against the annular step, and the inside of the water inlet cavity and the drainage cavity are respectively provided with rubber sealing rings B, and the rubber sealing ring B abuts on the annular gap between the outer edge of the inner end of the end cap and the inner wall of the cavity of the shell.

[0007] Preferably, annular protrusions B are respectively provided on the inner walls of the water inlet chamber and the drain chamber, and a rubber sealing ring B is provided on the outer surface of the annular protrusion B.

[0008] Preferably, a support assembly is provided inside the water inlet chamber and the drain chamber. The support assembly includes an outer ring, an inner ring, a movable rod, a fixed sleeve, and an elastic member. The movable rods are evenly arranged along the circumference on the inner surface of the outer ring. The outer surface of the inner ring is provided with fixed sleeves corresponding to the movable rods. The movable rod is slidably connected to the fixed sleeve by extending into the cavity of the fixed sleeve. An elastic member is provided between the end of the movable rod and the bottom of the cavity of the fixed sleeve. A rubber sealing ring B is provided along the outer edge of the outer ring. The bottom of the inner ring abuts against the end of the reverse osmosis membrane module, and the outer edge of the inner ring abuts against the inner wall of the cavity of the housing.

[0009] Preferably, an annular groove is provided at the inner end of the water outlet. The end of the water collecting pipe is placed in the annular groove. A rubber sealing ring C is provided along the circumference on the outer wall of the end of the water collecting pipe. The rubber sealing ring C abuts against the inner wall of the annular groove.

[0010] Preferably, the holding part is a handle. An installation groove is provided on the outer surface of the end cover. A handle is provided in the installation groove, and the direction of the handle is along the radial direction.

[0011] Preferably, an insertion ring is provided along the circumference on the outer surface of the rubber sealing ring A. An insertion groove corresponding to the insertion ring is provided on the inner surface of the annular protrusion A. The rubber sealing ring A is detachably connected to the annular protrusion A by snapping the insertion ring into the insertion groove.

[0012] The beneficial technical effects of the present utility model are as follows:

[0013] 1. Compared with the method of connecting the housing and the end cover by a structurally complex locking device or by interference fit at the joint, by using the combination of external threads and internal threads to connect the end cover and the housing, the installation and disassembly operations of the end cover are simpler and more labor-saving. Coupled with the holding part on the outer surface of the end cover, a stable holding point for the staff to exert force is provided, further reducing the difficulty of the installation and disassembly operations of the end cover and facilitating maintenance work.

[0014] 2. By using the combination of the rubber sealing ring A and the rubber sealing ring B, double-layer sealing is achieved, improving the sealing performance and reducing the possibility of liquid in the water inlet chamber and the drain chamber leaking out through the gap between the inner wall of the cavity of the end cover and the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The technical solution of the present utility model will be further described below with reference to the drawings.

[0016] Attached Figure 1 is the front view of the present utility model.

[0017] Attached Figure 2 is the main perspective sectional view of the present utility model, and the rubber sealing ring B is installed on the annular protrusion B.

[0018] Attached Figure 3 is Figure 2 the enlarged view of part A in

[0019] Attached Figure 4 is the main perspective sectional view of the present utility model, and the rubber sealing ring B is installed on the support assembly.

[0020] Attached Figure 5 is Figure 4 the enlarged view of part B of

[0021] Attached Figure 6 is Figure 4 the enlarged view of part C of

[0022] Attached Figure 7 is the schematic view of the outer end of the support assembly.

[0023] Attached Figure 8 is the left view of the present utility model.

[0024] In the figure: 1 - outer shell, 2 - end cover, 3 - reverse osmosis membrane assembly, 4 - water inlet chamber, 5 - drainage chamber, 6 - water inlet, 7 - water outlet, 8 - sewage outlet, 9 - collecting pipe, 10 - external thread, 11 - internal thread, 12 - holding part, 13 - annular protrusion A, 14 - rubber sealing ring A, 15 - annular step, 16 - rubber sealing ring B, 17 - annular protrusion B, 18 - support assembly, 19 - outer ring, 20 - inner ring, 21 - movable rod, 22 - fixed sleeve, 23 - elastic member, 24 - annular groove, 25 - rubber sealing ring C, 26 - installation groove, 27 - handle, 28 - insertion ring, 29 - insertion groove. Specific embodiments

[0025] The present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Embodiment:

[0027] As shown in Figure 1 , Figure 2 and Figure 8As shown, this embodiment provides a reverse osmosis membrane device for treating fluorine-containing wastewater in the electronics industry, comprising a shell 1, an end cover 2 and a reverse osmosis membrane assembly 3. The shell 1 is cylindrical, and the left and right ends of the cavity of the shell 1 are respectively provided with end covers 2, and the middle part of the cavity is provided with a reverse osmosis membrane assembly 3. The left and right sides of the cavity of the shell 1 on the reverse osmosis membrane assembly 3 are used as a water inlet chamber 4 and a drainage chamber 5, respectively. The end cover 2 near the water inlet chamber 4 is provided with a water inlet 6, and the water inlet 6 is connected to the water inlet chamber 4. The end cover 2 near the drainage chamber 5 is provided with a water outlet 7 and a sewage outlet 8, and the sewage outlet 8 is connected to the drainage chamber 5. The reverse osmosis membrane assembly 3 is provided with a water collecting pipe 9, and the end of the water collecting pipe 9 is connected to the inner end of the water outlet 7. The shape of the shell 1 is cylindrical. The side wall of the end cover 2 and the left and right ends of the cavity of the shell 1 are respectively provided with corresponding external threads 10 and internal threads 11, and the threaded connection between the end cover 2 and the shell 1 is realized through the external threads 10 and the internal threads 11. The end cover 2 is provided with a gripping portion 12 facing outward, and the outer end of the side wall of the end cover 2 is provided with an annular protrusion A13 along the circumference, and the inner surface of the annular protrusion A13 is provided with a rubber sealing ring A14. The port of the shell 1 is provided with an annular step 15 corresponding to the rubber sealing ring A14 facing outward, and the rubber sealing ring A14 is abutted against the annular step 15. The inside of the water inlet cavity 4 and the drainage cavity 5 are respectively provided with rubber sealing rings B16, and the rubber sealing ring B16 abuts on the annular gap between the outer edge of the inner end of the end cover 2 and the inner wall of the cavity of the shell 1.

[0028] Compared with the method of connecting the housing 1 and the end cap 2 by a locking device with a complex structure or by interference fit at the joint, the connection between the end cap 2 and the housing 1 is achieved by using the external thread 10 and the internal thread 11 in combination, and the assembly and disassembly of the end cap 2 is simpler and more labor-saving. In addition, the gripping portion 12 facing outward of the end cap 2 provides a gripping point for the staff to exert stable force, further reducing the difficulty of the assembly and disassembly of the end cap 2 and facilitating maintenance. The rubber sealing ring A14 and the rubber sealing ring B16 are used in combination to achieve double-layer sealing, improve the sealing performance, and reduce the possibility of the liquid in the water inlet cavity 4 and the drainage cavity 5 leaking out from the gap between the inner wall of the cavity of the end cap 2 and the housing 1.

[0029] Further, such as Figure 2 and Figure 3 As shown, an annular protrusion B17 is respectively provided on the inner wall of the water inlet chamber 4 and the water discharge chamber 5, and a rubber sealing ring B16 is provided outside the annular protrusion B17.

[0030] The annular protrusion B17 provides a stable mounting surface for the sealing ring B and determines the deepest point of the end cover 2 screwed into the cavity of the housing 1.

[0031] Further, such as Figure 4 , Figure 5 and Figure 7As shown in the figure, a support assembly 18 is provided inside the water inlet chamber 4 and the drain chamber 5. The support assembly 18 includes an outer ring 19, an inner ring 20, a movable rod 21, a fixed sleeve 22, and an elastic member 23. The inner surface of the outer ring 19 is evenly provided with movable rods 21 along the circumference. The outer surface of the inner ring 20 is provided with fixed sleeves 22 corresponding to the movable rods 21. The movable rod 21 is slidably connected to the fixed sleeve 22 by extending into the cavity of the fixed sleeve 22. An elastic member 23 is provided between the end of the movable rod 21 and the bottom of the cavity of the fixed sleeve 22. A rubber sealing ring B16 is provided along the outer edge of the outer ring 19. The bottom of the inner ring 20 abuts against the end of the reverse osmosis membrane module 3, and the outer edge of the inner ring 20 abuts against the inner wall of the cavity of the housing 1.

[0032] The support assembly 18 can be taken out of the housing 1, which is convenient for the staff to maintain the rubber sealing ring B16 on the support assembly 18 afterwards. After the end cap 2 is installed on the housing 1, the elastic sealing ring B moves inward under the extrusion of the inner end of the end cap 2, and the outer ring 19 connected to the elastic sealing ring B moves accordingly. The movable rod 21 connected to the outer ring 19 further extends into the cavity of the fixed sleeve 22, and the elastic member 23 is compressed by the movable rod 21. The reverse elastic force of the deformed elastic member 23 enables the rubber sealing ring B16 to tightly abut against the annular gap between the outer edge of the inner end of the end cap 2 and the inner wall of the cavity of the housing 1 to play a sealing role. The outer edge of the inner ring 20 abuts against the inner wall of the cavity of the housing 1, and the inner ring 20 is clamped by the cavity of the housing 1 to prevent the rubber sealing ring B16 from being unable to be accurately positioned due to the deviation of the support assembly 18.

[0033] Furthermore, as Figure 6 shown, an annular groove 24 is provided at the inner end of the water outlet 7. The end of the collecting pipe 9 is placed in the annular groove 24. A rubber sealing ring C25 is provided along the circumference of the outer wall of the end of the collecting pipe 9. The rubber sealing ring C25 abuts against the inner wall of the annular groove 24.

[0034] The annular groove 24 helps the end of the collecting pipe 9 to be better docked with the inner end of the water outlet 7. The rubber sealing ring C25 blocks the gap between the outer wall of the end of the collecting pipe 9 and the inner wall of the annular groove 24 to prevent the sewage in the drain chamber 5 from leaking to the outside through the above gap.

[0035] Furthermore, as Figure 8 shown, the holding part 12 is a grip 27. An installation groove 26 is provided on the outer surface of the end cap 2. The grip 27 is provided in the installation groove 26, and the direction of the grip 27 is along the radial direction.

[0036] The installation groove 26, on the one hand, makes the grip 27 lower than the outer surface of the end cap 2 to help protect the grip 27, and on the other hand, provides space for the staff to hold the grip 27 with their hands. The direction of the grip 27 is set to facilitate the staff to rotate the end cap 2 in the radial direction with the grip 27 as the force application point.

[0037] Further, as Figure 3 and Figure 5 shown, an insertion ring 28 is provided along the circumference on the outer surface of the rubber sealing ring A14, and an insertion groove 29 corresponding to the insertion ring 28 is provided on the inner surface of the annular protrusion A13. The detachable connection between the rubber sealing ring A14 and the annular protrusion A13 is realized by snapping the insertion ring 28 into the insertion groove 29.

[0038] The sealing rubber ring A can be installed and removed on the end cover 2 through the insertion ring 28 and the insertion groove 29, which is convenient for the maintenance and replacement of the sealing rubber ring A.

[0039] The working principle and usage process of the present utility model are as follows:

[0040] When the end cover 2 needs to be installed and removed due to maintenance work, the staff can hold the holding part 12 and rotate the end cover 2. When the end cover 2 is completely installed on the outer shell 1, the rubber sealing ring A14 abuts against the annular step 15, blocking the annular gap between the outer end of the side wall of the end cover 2 and the inner wall of the cavity of the outer shell 1. The rubber sealing ring B16 blocks the annular gap between the outer edge of the inner end of the end cover 2 and the inner wall of the cavity of the outer shell 1. The end of the water collecting pipe 9 is placed in the annular groove 24, and the rubber sealing ring C25 blocks the gap between the outer wall of the end of the water collecting pipe 9 and the inner wall of the annular groove 24.

[0041] The above are only specific application examples of the present utility model, which do not constitute any limitation to the protection scope of the present utility model. Any technical solutions formed by equivalent transformation or equivalent substitution fall within the scope of the protection of the rights of the present utility model.

Claims

1. A reverse osmosis membrane device for treating fluorine-containing wastewater in the electronics industry, comprising a shell, an end cover and a reverse osmosis membrane assembly, wherein the shell is cylindrical, the left and right ends of the cavity of the shell are respectively provided with end covers, and the middle part of the cavity is provided with a reverse osmosis membrane assembly, the left and right sides of the cavity of the shell are respectively used as a water inlet cavity and a drainage cavity, the end cover close to the water inlet cavity is provided with a water inlet, the water inlet is communicated with the water inlet cavity, the end cover close to the drainage cavity is provided with a water outlet and a sewage outlet, the sewage outlet is communicated with the drainage cavity, the reverse osmosis membrane assembly is provided with a water collecting pipe, the end of the water collecting pipe is connected to the inner end of the water outlet, and the characteristics are as follows: The shell is cylindrical in shape, and the left and right ends of the end cover side wall and the shell cavity are respectively provided with corresponding external threads and internal threads, and the end cover and the shell are threadedly connected through the external threads and internal threads. The end cover is provided with a gripping portion facing outward, and the outer end of the end cover side wall is provided with an annular protrusion A along the circumference, and the inner surface of the annular protrusion A is provided with a rubber sealing ring A, and the port of the shell is provided with an annular step corresponding to the rubber sealing ring A facing outward, and the rubber sealing ring A abuts against the annular step, and the inside of the water inlet cavity and the drainage cavity are respectively provided with rubber sealing rings B, and the rubber sealing ring B abuts on the annular gap between the inner end outer edge of the end cover and the inner wall of the shell cavity.

2. A reverse osmosis membrane device for treating fluorine-containing wastewater in the electronics industry according to claim 1, characterized in that: An annular protrusion B is respectively arranged on the inner wall of the water inlet cavity and the drainage cavity, and a rubber sealing ring B is arranged outwardly of the annular protrusion B.

3. A reverse osmosis membrane device for treating fluorine-containing wastewater in the electronics industry according to claim 1, characterized in that: A support assembly is provided inside the water inlet cavity and the drainage cavity, and the support assembly includes an outer ring, an inner ring, a movable rod, a fixed sleeve and an elastic member. The movable rods are evenly provided along the circumference of the inner surface of the outer ring, and a fixed sleeve corresponding to the movable rods is provided outwardly of the inner ring. The movable rod is extended into the cavity of the fixed sleeve to achieve a sliding connection with the fixed sleeve. An elastic member is provided between the end of the movable rod and the bottom of the cavity of the fixed sleeve. A rubber sealing ring B is provided along the outer edge of the outer ring, the bottom of the inner ring abuts against the end of the reverse osmosis membrane assembly, and the outer edge of the inner ring abuts against the inner wall of the cavity of the outer shell.

4. A reverse osmosis membrane device for treating fluorine-containing wastewater in the electronics industry according to claim 1, characterized in that: The inner end of the water outlet is provided with an annular groove, the end of the water collecting pipe is placed in the annular groove, and the outer wall of the end of the water collecting pipe is provided with a rubber sealing ring C along the circumference, and the rubber sealing ring C abuts against the inner wall of the annular groove.

5. A reverse osmosis membrane device for treating fluorine-containing wastewater in the electronics industry according to claim 1, characterized in that: The holding portion is a handle, and a mounting groove is arranged outwardly of the end cover, and a handle is arranged in the mounting groove, and the direction of the handle is along the radial direction.

6. A reverse osmosis membrane device for treating fluorine-containing wastewater in the electronics industry according to claim 1, characterized in that: The rubber sealing ring A is provided with an insertion ring along the circumference facing outward, and the annular protrusion A is provided with an insertion groove corresponding to the insertion ring on the inner surface. The rubber sealing ring A and the annular protrusion A are detachably connected by snapping the insertion ring into the insertion groove.

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